feat: 新增写作画布系统

frontend-web/src/core/settings/local.ts

@@ -5,11 +5,12 @@ export const DEFAULT_LOCAL_SETTINGS: LocalSettings = {
     enabled: true,
   },
   context: {
-    model_name: undefined,
-    mode: undefined,
-    reasoning_effort: undefined,
-  },
-};
+    model_name: undefined,
+    mode: undefined,
+    reasoning_effort: undefined,
+    writing_mode: false,
+  },
+};
 
 export const LOCAL_SETTINGS_KEY = "deerflow.local-settings";
 export const THREAD_MODEL_KEY_PREFIX = "deerflow.thread-model.";